Pump



Tui

Jan. 29, 19,52 C, F, HUBER 2,583,572

PUMP` Filed Jan. 28, 1948 i 2 SHEETS--SHEET 2 lNVENTOR CHQQLES FI fil/55H ATTORNEY Patented Jan. 29, 1952 TED PATENT F FICE 1 "PUMP Charles'Fl-ederiek Huber, Middle` River, lMdwas 'signor'.` by'l mesne assignments, of 0ne`-ha1f.. to

Zanten` Pump CorporatioxnsNew `York,:1\. `Y.-

(Application'ianuary 28, 1948`Scrial No...4,814 l This invention relates topumps or-compressors, hereinafter referred to'as pumps.

The primary object of the-present invention 4is' therprovisionof `a pump which is simple in construction and :highlyfeificient in operation respectively,` showing'the rrotor in `a different position; i

Fig. 8 isasectional view-on thel-ine 8J-8vo Fig-3.

Referring `now to the `drawings in detail, the pump IDH embodying the `present invention, 'vi-n the presently preferredform thereof, comprises a casing whichfi-noliidesthe body `I2 andthe end plates orheads 4I4 and t6. The baseof the casing :isf-conveniently- `iorinedby the flat .bottom partlI'B ofthe--casingbody f2 and"by-``the"`fiat lateral Jextensions f and 22 ofy the Jend plates I4--an`d I6.

Thecasi-ng`body I2 has an `innercylindrical surface! intermediate the circuniferentiallly` extending *ribs` 24 and?! E` in outwardly` offsetfrelation` to the latter, the i-nnersurfaCes of` said: ribs beingcylindrical coeaxiallywith surfacef 25. *Said casing body I2 is preferably 'formed ofhard rubber `although itcanf bel'iormed of anyothersuit able material. As shown: said casingn bodyA i2 is split transversely for` the `full length.` thereof: as indcatedat 28. lheinletjand.' outlet openings and 312.y are ydisposed-at tbeopposlte sideswoi the split 181. it beinaunderstood thateither'zoi saidzopenings. may be.- theinlet .opening and that the otherof said openings maybe the outlet opening. .depending upon, the `direction or rotation of the rotor hereinafterreierred toaaslwillbe subsequently more lrclearly understood. `Casing body l2. is preferably formed` in Qnepieee. the split being provided therein.

:s claims. (c1. inauen 2 resilient'andflexible member. orliner 8l which is preferably formed of rubber'andwhich can bef'forrned ofany other suitable material is disposedwithin the casing body I2 anddenes with 4the cylindrical surface 25 ofthe latterwan annular: iluidpassage 34 which extends laterally between ribs-24 and 26 and circumfer'entially of casing body I2 from the inlet 30' to the outlet 32. The sides of said passageare sealed by the end portions 36 and 38 of member 3| which are respectively clamped between rib 24 andthe cylindrical projection 40 of plate I4 and between rib'Ztand thecylindrical projection 42 ofoplate I6. Direct communication between the casing openingsBU' and 32 isprevented by the integral portion `44 ofmember 3| `which is' clampedrbe tween the confronting ends 46 and48 of the split portion 28 of the easing body I2. The cylinder plates or heads I4and I6, which are formed of metal, arefsecured to thecasing body I2 `by throughebolts-SII. It--will be understood that whenthe bolts 50 at'theupper part of the casing are passed through 'the holes inthe casingfbody I2 and in the end plates I4 and I6,l the confronting `end portions 4B .andf48 of the `casing .body are forced toward each other and thereby clamp sealingportion 44xof member 3l in duid-tight relation "Withxsaid confronting endY portions 46 andV 48. 'For `accomplishing this `clamping action, the` upperbolt holes in casing bodyl I2 are located in axially-oliset relation to the companion upper bolt holes, respectively, of plates I4- and IIB so that in order to bring said casing bolt holes into axialregistry with said bolt holes ofthe plates, itis necessary to press againstthe opposite sides ofthe casing body I2 to move end portions 46 and `i3 toward each other sufficiently to bring the bolt holes of the casing bodyinto axial 'alignmentwiththelbolt holes of the end platesv Itand IB. When'the-bolts are passed through the alignedholes at opposite sides of the. split,` lportion 44 .is held Vtightly clamped between end portions `it and 48. Also, it will be noted'that member 3| is provided at its opposite ends with. annular ribs' 52 which are received in theV adjacent recesses 54, respectively.'in.plates I 4 and IB for improving the sealing relation between the peripherally extending lside edges of member 3,! and the adjacentparts of thepump casing.

Provision is made to progressively press resilient member3l against cylindrical surface 25 of the casing for 'thefull width of said surface, the progression of said pressing action being `in a direction extending circumferentially of the casing body I2 from the inlet 30 to theoutlet 32. The means provided for this purpose comprises a rotary shaft 56 journalled in the end plates or cylinder'heads I4 and I6 for rotation co-axially of the cylindrical surface 25. An eccentric rotor 58 is mounted on shaft 56 for rotation about an axis eccentric to the axis of said cylindrical surface. A cylindrical pressure-applying member 60 is mounted on rotor 58 with an interposed ball bearing 62.

In operation, shaft 56 is rotated by an electric motor, or in any other suitable way, for rotating the rotor 58 in the direction of the arrow (Figs. 4 and '7), when the openings 30 and 32 are the Yinlet and outlet openings respectively of the silient member or liner 3| against the cylindrical surface 25 for the full width of the latter. will be understood that member 60 tightly engages the inner cylindrical surface of member 3| and does not move with respect to said member 3l. However, it will be noted that the rotor is moved in relation to pressure-applying member 60 during the rotation of 'shaft 56 whereby to accomplish the above described progressive pressing of liner 3I against the cylindrical surface 25 of the casing body I2.

A vent opening 66 is provided in one of the end plates, here shown as end plate I6. The inner end of said vent communicates with the interior of the space defined by the inner surface of flexi- Vble member 3I so as to eliminate a partial vacuum or to prevent excess Vpressure in said space which might result in interfering with the pressing of said member against the cylindrical surface 25 during the operation of the pump.

It will -be understood that various changes in details of construction and in the arrangement of parts may be madel without departing from the underlying idea or principles of this invention Within the scope of the appended claims. v Having thus described my invention, what I claim and desire to secure by Letters Patent, is: .1. A pump comprising a casing provided with a fluid inlet and a fluid outlet, an inner cylindrical surface and opposite side walls at the opposite side edges, respectively, of said surface, said inner cylindrical surface being provided with circumferentially extending ribs at the marginal side edge portions thereof and an intermediate part offset radially outwardly of said marginal..

side Vedge portions, an annular uid-impelling member having a portion overlying said ribs secured in said casing between said inlet and outlet and having its marginal side edge portions in fluid sealing relation to said circumferentially extending ribs at the marginal side edge portions of'said surface of the casing and dening with said intermediate oiset part of said surface a fluid passage extending circumferentially of said surface from said inlet to said outlet, and .means for progressively pressing said fluid-impelling member against said loffset surface, the progression of pressing action being along the length of said passage in the direction from said inlet to said outlet, with'progressive relief of said pressing action immediately following the latter in the same direction, said side walls being provided with means having a cylindrical projection which extends into-the space defined by said inner cylindrical surface, said last mentioned means holding said marginal side edge portions of said fluidimpeller member in said sealing relation to said ribs at the marginal side edge portions of said casing surface, said cylindrical projection being Ioperative to clamp the porti-on of said fluid-impelling member overlying said ribs between said cylindrical projection and said ribs in a radial direction in fluid sealing relation to said ribs.

2. A pump comprising a casing provided with a fluid inlet anda uid outlet, an inner cylindrical surface and opposite side walls at the opposite side edges, respectively of said surface, said inner cylindrical surface being provided with circumferentially extending ribs at the marginal side edge portions thereof and an intermediate part offset radially outwardly of said marginal side edge portions, an annular fluid-impelling member secured in said casing between said inlet and outlet, said fluid-impelling member having a portion overlying said ribs and marginal sideredge portions', means extending into the space deiined by said inner cylindrical surface and clamping said portion of said fluid-impelling memberoverlying said ribs between said means and said ribs in a radial direction in fluid sealing relation to said ribs, said last mentioned means having recesses for the reception of said marginal side edge portions of said fluid-impelling member, said uidimpelling member defining with said intermediate offset part of said surface a fluid passage extending circumferentially of said surface from said inlet to said outlet, and means for progressively pressing said fluid-impelling member against said offset surface, the progression of pressing action being along the length of said passage in the direction from said inlet to said outlet, with progressive relief of said pressing action immediately -following the latter in the same direction.

3. A pump comprising a-casing having an inlet and an outlet, said casing having a hollow body provided with an inner cylindrical surface and opposite side walls, said cylindrical surface being provided with circumferentially extending ribs at the ,marginal sideV edge portions thereof, means including a flexible and resilient member secured in said casing and defining with said surface of the casing a uid passage extending circumferentially of said surface from said inlet to said outlet, said flexible and resilient member having a portion overlying said ribs of said cylindrical surface and having circumferentially extending ribs disposed at the opposite sides of said hollow body and the adjacent side walls, respectively, of the casing, a rotor mounted for rotation in said casing about an axis eccentric to the axis of said cylindrical surface, movable pressure-applying means operated by said rotor and operable on said resilient member to progressively press said resilient member against said surface of the c asing circumferentially thereof in a directionfrom said inlet to said outlet during the rotation of said rotor, and stationary means in said casing at opposite. sides of said movable pressure-applying means permanently sealing said passage at the opposite circumferentially extending side edges thereof, said stationary sealing means comprising acylindrical projection extending -into the space defined by said inner cylindrical surface and clamping said portion of the flexible and resilientmember overlying said ribs of said cylindrical surface between said projection and said last mentioned ribs, said stationary sealing means clamping the ribs of said flexible and resilient member in fluid-sealing engagement with said ribs of said cylindrical surface.

l 4. A pump comprising a casing having an inlet and an outlet, said casing .having a hollow` body provided with an inner cylindrical surface and opposite side wal1s,'a,pair of end plates associated with said hollow body, said cylindrical surface being provided with circumferentially extending ribs at the marginal side edge portions thereof, means including a flexible and resilient member secured in said casing and defining with said surface of the casing a iiuid passage extending circumferentially of said surface from said inlet to said outlet, said resilient member having a portion overlying said ribs of said cylindrical surface and having circumferentially extending ribs disposed at the opposite sides of said hollow body and the adjacent side Walls, respectively. of the casing, a rotor mounted for rotation in said casing about an axis eccentric to the axis of said cylindrical surface, and movable pressure-applying means operated by said rotor and operable on said resilient member to progressively press said resilient member against said surface of the casing circumferentially thereof in a direction from said inlet to said outlet during the rotation of said rotor, each of said end plates being provided with means for permanently sealing said passage at the opposite circumferentially extending side edges thereof, said means comprising a cylindrical projection extending into the space defined by said inner cylindrical surface and effective to clamp said portion of said resilient member overlying said ribs of said cylindrical surface between said projection and said last mentioned ribs, said sealing means having a portion effective to clamp said ribs of said resilient member in uid sealing engagement with said ribs of said cylindrical surface.

5. A pump comprising a casing having an inlet and an outlet, said casing having a hollow body provided with an inner cylindrical surface and opposite side walls, a pair of end plates associated with said hollow body, said cylindrical surface being provided with circumferentially extending ribs at the marginal side edge portions thereof, means including a flexible and resilient member secured in said casing and defining with said surface of the casing a fluid passage extending circumferentially of said surface from said inlet to said outlet, said resilient member having a, portion overlying said ribs of said cylindrical surface and having circumferentially extending ribs disposed at the opposite sides of said hollow body and the adjacent side walls, respectively, of the casing, a rotor mounted for rotation in said casing about an axis eccentric to the axis of said cylindrical surface, and movable pressure-applying means operated by said rotor and operable on said resilient member to progressively press said resilient member against said surface of the casing circumferentially thereof in a direction from said inlet to said outlet during the rotation of said rotor, each of said end plates being provided with means for permanently sealing said passage at the opposite circumferentially extending side edges thereof, said means comprising a cylindrical projection extending into the space defined by said inner cylindrical surface and effective to clamp said portion of said resilient member overlying said ribs of said cylindrical surface between said projection and said last mentioned ribs, said sealing means having a recess for the reception of said ribs of said resilient member whereby said sealing means is effective to clamp said ribs of said resilient member in fluid sealing engagement with said ribs of said cylindrical surface.

CHARLES FREDERICK HUBER.

REFERENCES CITED The .following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,633,056 Wishart June 21, 1927 2,246,488 Fraser June 17, 1941 2,428,619 Douglas Oct. '7, 1947 FOREIGN PATENTS Number Country Date 583,578 Great Britain Dec.` 20, 1946 590,045 Great Britain July 7, 1947 662,980 Germany Dec. '7, 1934 

